Intermittent server error log warning on rpl.rpl_get_master_version_and_clock

[Laurynas Biveinis]

On 5.6 trunk:

rpl.rpl_get_master_version_and_clock 'mix' w1 [ fail ] Found warnings/errors in server log file!
        Test ended at 2017-02-07 07:22:04
line
2017-02-07 15:21:47 5125 [Warning] Slave I/O: SET @master_heartbeat_period to master failed with error: Can't connect to MySQL server on '127.0.0.1' (111), Error_code: 2003
^ Found warnings in /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/debian-wheezy-x64/build/mysql-test/var/1/log/mysqld.2.err
ok

[Laurynas Biveinis (laurynas-biveinis)]

Linux errno 111 is ECONNREFUSED

[Laurynas Biveinis (laurynas-biveinis)]

Another message is

rpl.rpl_get_master_version_and_clock 'mix' w1 [ fail ] Found warnings/errors in server log file!
        Test ended at 2017-02-10 03:42:32
line
2017-02-10 11:42:16 10090 [Warning] Slave I/O: The slave IO thread stops because the initialization query 'SELECT @@GLOBAL.GTID_MODE' failed with error 'Can't connect to MySQL server on '127.0.0.1' (111)'. Error_code: 2003
^ Found warnings in /mnt/workspace/percona-server-5.6-param/BUILD_TYPE/debug/Host/centos5-64/build/mysql-test/var/1/log/mysqld.2.err
ok

[Laurynas Biveinis (laurynas-biveinis)]

rpl.rpl_get_master_version_and_clock 'mix' w1 [ fail ] Found warnings/errors in server log file!
        Test ended at 2017-03-15 22:13:39
line
2017-03-16 05:13:22 20774 [Warning] Slave I/O: The slave IO thread stops because the initialization query 'SELECT @@GLOBAL.GTID_MODE' failed with error 'Lost connection to MySQL server during query'. Error_code: 2013
^ Found warnings in /mnt/workspace/percona-server-5.6-repeat/BUILD_TYPE/debug/Host/amd64/MTR_REPEAT/2/build/mysql-test/var/1/log/mysqld.2.err
ok

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-3638